CN115405615B - Hinge mechanism and electronic device - Google Patents

Abstract

The application discloses a hinge mechanism and electronic equipment, which belong to the field of communication equipment, wherein in the hinge mechanism, a first rotating piece and a second rotating piece are respectively arranged on two opposite sides of a mounting assembly, the mounting assembly comprises a mounting seat and a synchronizing piece arranged on one surface of the mounting seat, and the synchronizing piece is movably matched with the mounting seat in the length direction of the mounting seat; the synchronizing piece is provided with a first limit groove and a second limit groove, the first rotating arm and the second rotating arm are in rotating fit with the mounting seat along the direction around the length direction, the first driving arm and the second driving arm are in spiral extension around the length direction and opposite in rotating direction, the first driving arm is in sliding fit with the first limit groove, the second driving arm is in sliding fit with the second limit groove, under the condition that the first rotating piece rotates along the first rotating direction relative to the mounting seat, the first driving arm drives the synchronizing piece to move along the length direction relative to the mounting seat, the synchronizing piece drives the second driving arm to rotate along the second rotating direction relative to the mounting seat, and the second rotating direction is opposite to the first rotating direction.

Description

Hinge mechanism and electronic device

Technical Field

The application belongs to the technical field of communication equipment, and particularly relates to a hinge structure and electronic equipment.

Background

In order to achieve the characteristics of portability, large display area, and the like, folding electronic devices are becoming popular with consumers. In addition, in the folding electronic device, gears respectively connected with the screen supporting parts at two sides of the hinge are generally arranged, and meanwhile, the gears are meshed with each other, so that the rotation angles of the screen supporting parts at two sides of the hinge relative to the base in the hinge are consistent, and the display effect and the user experience of the electronic device are improved. However, since the gears and the hinges are generally distributed along the rotation axis of the hinges, the space occupied by the gears and the hinges is relatively large, which can adversely affect the layout of other components in the electronic device.

Disclosure of Invention

An object of the present application is to provide a hinge mechanism and an electronic device, so as to solve the problem that a gear for providing a synchronization function and a hinge for providing a rotation function in the existing foldable electronic device are arranged along a rotation axis, and occupy a relatively large space, which may adversely affect the layout of other components in the electronic device.

In a first aspect, embodiments of the present application disclose a hinge mechanism comprising a mounting assembly, a first rotating member and a second rotating member, wherein,

The first rotating piece and the second rotating piece are respectively arranged on two opposite sides of the mounting assembly, the mounting assembly comprises a mounting seat and a synchronizing piece arranged on one surface of the mounting seat, and the synchronizing piece and the mounting seat are movably matched in the length direction of the mounting seat;

the synchronous piece is provided with a first limit groove and a second limit groove, the first rotating piece comprises a first connecting part, a first rotating arm and a first driving arm, the first rotating arm and the first driving arm are connected to the same side of the first connecting part, and the second rotating piece comprises a second connecting part, a second rotating arm and a second driving arm, the second rotating arm and the second driving arm are connected to the same side of the second connecting part;

The first rotating arm and the second rotating arm are in rotating fit with the mounting seat along the direction surrounding the length direction, the first driving arm and the second driving arm are in spiral extension around the length direction and opposite in rotating direction, the first driving arm is in sliding fit with the first limiting groove, the second driving arm is in sliding fit with the second limiting groove, the first driving arm drives the synchronizing piece to move along the length direction relative to the mounting seat under the condition that the first rotating piece rotates along the first rotating direction relative to the mounting seat, the synchronizing piece drives the second driving arm to rotate along the second rotating direction relative to the mounting seat, and the second rotating direction is opposite to the first rotating direction.

In a second aspect, an embodiment of the present application discloses an electronic device, which includes a first screen support portion, a second screen support portion, a display screen, and the hinge mechanism described above, where the first screen support portion is fixedly connected to the first connection portion, the second screen support portion is fixedly connected to the second connection portion, and the display screen is supported on the first screen support portion and the second screen support portion.

The embodiment of the application discloses a hinge mechanism which comprises a mounting assembly, and a first rotating piece and a second rotating piece which are connected to two opposite sides of the mounting assembly. The first rotating arm in the first rotating piece is rotationally connected to one side of the mounting seat, and the second rotating arm in the second rotating piece is rotationally connected to the other side of the mounting seat, so that the first rotating piece and the second rotating piece can both form a rotating fit relation with the mounting seat.

Simultaneously, one side of the mount pad in the installation component is provided with the synchronizing piece, synchronizing piece and mount pad clearance fit on the length direction of mount pad, and the synchronizing piece is equipped with first spacing groove and second spacing groove, first actuating arm and the first spacing groove sliding fit in the first piece that rotates, second actuating arm and the second spacing groove sliding fit in the second piece, first actuating arm and second actuating arm are the helicitic texture that extends around the length direction spiral of mount pad, and the direction of rotation of first actuating arm and second actuating arm is opposite, thereby under the circumstances that first rotating piece rotated along first direction of rotation relatively to the mount pad, make first rotating piece can drive the synchronizing piece through its first actuating arm relatively to move along the length direction of mount pad, utilize synchronizing piece drive second actuating arm to rotate, make second rotating piece rotate relatively to the mount pad along the direction that is opposite to first rotating piece, realize first rotating piece and second rotating piece can rotate relatively to the purpose of mount pad synchronization.

In addition, the space occupied by the structure in the hinge mechanism is relatively small, and the whole size of the whole hinge mechanism can be further reduced by mutually matching the components, so that the space occupied by the hinge mechanism in the electronic equipment can be reduced, and the layout work of other components in the electronic equipment is facilitated.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:

FIG. 1 is a schematic view of a hinge mechanism according to an embodiment of the present application;

FIG. 2 is an exploded view of a hinge mechanism according to an embodiment of the present application;

FIG. 3 is a schematic view of a part of the structure of a hinge mechanism according to an embodiment of the present application;

FIG. 4 is an exploded view of a portion of the structure of a hinge mechanism disclosed in an embodiment of the present application;

FIGS. 5 to 8 are schematic views showing part of the structure of a hinge mechanism according to an embodiment of the present application;

fig. 9 is a schematic diagram illustrating an operating principle of a synchronizing member in a hinge mechanism according to an embodiment of the present application.

Reference numerals illustrate:

110-mounting seat, 111-first accommodation groove, 112-second accommodation groove, 120-synchronous piece, 121-first limit part, 121 a-first limit groove, 122-second limit part, 122 a-second limit groove, 130-base, 140-first arc-shaped matching part,

201-Second arcuate mating portion, 210-first rotating member, 211-first connecting portion, 212-first rotating arm, 213-first drive arm, 214-first hover arm, 214 a-first plane, 214 b-second plane, 214 c-third plane, 220-second rotating member, 221-second connecting portion, 222-second rotating arm, 223-second drive arm, 224-second hover arm, 224 a-second abutment surface,

300-Damping assembly, 310-spring, 320-cam, 330-guide post,

410-First support, 420-second support.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that some, but not all embodiments of the application are described. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

As shown in fig. 1 to 9, the embodiment of the application discloses a hinge mechanism, which can be matched with a flexible screen to form a folding electronic device, wherein the electronic device has a folding state and an unfolding state, and the overall size of the electronic device in all directions is relatively smaller under the condition that the electronic device is in the folding state, so that the electronic device has stronger portability; under the condition that the electronic equipment is in an unfolding state, the display screen of the electronic equipment has a larger display area, and can provide a better look and feel for a user.

Of course, such hinge mechanisms are also typically provided with a housing in order to ensure that the flexible screen can be brought into a stable assembled relationship with the hinge mechanism. Specifically, the opposite sides of the hinge mechanism may be provided with a casing (not shown in the figure), and the display screen may be fixed on the casing, so that the casing may provide a supporting function for the display screen, and in the process of relative rotation of two adjacent casings, the display screen may be driven to generate a corresponding folding or unfolding action.

The hinge mechanism includes a mounting assembly, a first rotating member 210 and a second rotating member 220, where the structures of the first rotating member 210 and the second rotating member 220 may be different, and in another embodiment of the present application, the structures of the first rotating member 210 and the second rotating member 220 are symmetrically arranged, so as to improve a connection effect between the hinge mechanism and the housings on two opposite sides thereof, so that the rotation actions between the two housings and the hinge mechanism correspond to each other, and improve the precision of the electronic device.

Accordingly, in order to ensure that the hinge mechanism can be assembled with the housings disposed on opposite sides thereof, the first rotating member 210 and the second rotating member 220 in the hinge mechanism are disposed on opposite sides of the mounting assembly, respectively, so that the mounting assembly can be connected with the two housings by using the first rotating member 210 and the second rotating member 220, respectively. Specifically, the first rotating member 210 and the housing, and the second rotating member 220 and the housing may be fixedly connected to each other by welding or the like; in another embodiment of the present application, the first rotating member 210 and the second rotating member 220 may be detachably and fixedly connected to the housing by a screw connection member, so as to facilitate the subsequent maintenance and repair.

The mounting assembly includes the mounting seat 110 and the synchronizing member 120, as described above, the first rotating member 210 and the second rotating member 220 are respectively disposed on opposite sides of the mounting assembly, and in the case that the mounting assembly includes the mounting seat 110, the first rotating member 210 and the second rotating member 220 may be respectively disposed on opposite sides of the mounting seat 110; meanwhile, the synchronizing member 120 is located on one surface of the mounting base 110. In detail, the mounting base 110 has a first side and a second side opposite to each other, and the mounting base 110 further has a first side and a second side opposite to each other, and four spaces of the first side, the second side and the second side are sequentially distributed along a direction around a rotation axis of the hinge mechanism, that is, the first side is located on one side of the first side and the second side, the second side is located on the other side of the first side and the second side, wherein the first rotating member 210 is located on the first side of the mounting base 110, the second rotating member 220 is located on the second side of the mounting base 110, and the synchronizing member 120 is located on the first side of the mounting base 110.

In addition, it should be noted that, the above-mentioned positional relationship between the first rotating member 210 and the second rotating member 220 and the mounting base 110 is described by taking the case that the hinge mechanism is in the unfolded state as an example, and if the hinge mechanism is in the folded state, the first rotating member 210 and the second rotating member 220 can both rotate to the second surface of the mounting base 110 relative to the mounting base 110, that is, in the folded state, the first rotating member 210 and the second rotating member 220 are both located on the other surface of the mounting base 110 facing away from the synchronization member 120.

In addition, in order to ensure that the synchronizing member 120 can provide a synchronizing effect, the synchronizing member 120 is movably engaged with the mounting base 110 in the length direction of the mounting base 110, so that the first rotating member 210 and the second rotating member 220 can synchronously rotate relative to the mounting base 110 by using the synchronizing member 120. The length direction of the mounting base 110 is the rotation axis direction of the hinge mechanism. As described above, the synchronizing member 120 is disposed on one surface of the mounting base 110, and since the mounting base 110 and the synchronizing member 120 are movably matched in the length direction of the mounting base 110, in order to ensure that the synchronizing member 120 can form a reliable matching relationship with the mounting base 110, a sliding connection member may be disposed between the two, and by making both the synchronizing member 120 and the mounting base 110 and the sliding connection member mutually limit in the direction perpendicular to the mounting base 110. The direction perpendicular to the mounting seat 110 may specifically be a thickness direction of the mounting seat 110, or may be a distribution direction between the mounting seat 110 and the synchronization member 120.

As shown in fig. 2, the synchronizing member 120 is provided with a first limit groove 121a and a second limit groove 122a, the first rotating part includes a first connecting part 211, a first rotating arm 212, and a first driving arm 213, and the second rotating part includes a second connecting part 221, a second rotating arm 222, and a second driving arm 223. Wherein, the first rotating arm 212 and the first driving arm 213 are connected with the first connecting portion 211, and the first rotating arm 212 and the first driving arm 213 are located at the same side of the first connecting portion 211. More specifically, the first rotating arm 212 and the first driving arm 213 are configured to cooperate with the mounting base 110, and the first connecting portion 211 is configured to be fixedly connected to the housing, so that the first rotating portion can be in a rotating connection relationship with the mounting base 110. Similarly, the second rotating arm 222 and the second driving arm 223 are connected to the second connecting portion 221, and the second rotating arm 222 and the second driving arm 223 are located on the same side of the second connecting portion 221. More specifically, the second rotating arm 222 and the second driving arm 223 are both configured to cooperate with the mounting base 110, and the second connecting portion 221 is configured to be fixedly connected to another housing, so that the second rotating portion can be in a rotating connection relationship with the mounting base 110.

During assembly of the hinge mechanism, the first rotating member 210 is in rotating engagement with the mount 110 by the first rotating arm 212 thereof, and the second rotating member 220 is in rotating engagement with the mount 110 by the second rotating arm 222 thereof, so that both the first rotating member 210 and the second rotating member 220 can be in rotating engagement with the mount 110 in a direction around the length direction of the mount 110 (i.e., a direction around the rotating axis direction of the hinge mechanism). Specifically, taking the first rotating arm 212 as an example, an arc-shaped groove may be provided on the mounting seat 110, and the first rotating arm 212 is installed in the arc-shaped groove, so that the first rotating arm 212 can move in the arc-shaped groove, so that the first rotating arm 212 and the mounting seat 110 can form a rotating fit relationship; conversely, by providing the mounting base 110 with the arc-shaped protrusion and the first rotating arm 212 with the arc-shaped groove, the first rotating arm 212 and the mounting base 110 can form a rotation fit relationship. Of course, the first rotating arm 212 and the mounting base 110 may be connected with each other by other structures and form a rotation fit relationship, which is not described here in detail in consideration of brevity of the text; in addition, the structure of the first rotating arm 212 may be referred to between the second rotating arm 222 and the mounting base 110, so that the second rotating arm 222 can form a rotating fit relationship with the mounting base 110.

As described above, the first driving arm 213 is a component in the first rotating member 210, the second driving arm 223 is a component in the second rotating member 220, the first rotating member 210 and the second rotating member 220 are respectively connected to the mounting base 110, and the first rotating member 210 and the second rotating member 220 are respectively connected to the housings on two opposite sides of the hinge mechanism, and in the folding and unfolding process of the electronic device, the mounting base 110 is used as a reference frame, and the rotating directions of the housings on two opposite sides of the hinge mechanism are opposite, and correspondingly, the rotating directions of the first rotating member 210 and the second rotating member 220 fixedly connected to the two housings are also opposite.

Based on the above, in the hinge mechanism disclosed in the embodiment of the present application, in order to ensure that the first rotating member 210 and the second rotating member 220 can have a synchronous rotation function, as shown in fig. 4, the first driving arm 213 and the second driving arm 223 both extend helically around the length direction of the mounting seat 110, and the rotation directions of the first driving arm 213 and the second driving arm 223 are opposite, meanwhile, the first driving arm 213 is slidingly engaged with the first limiting groove 121a of the synchronizing member 120, and the second driving arm 223 is slidingly engaged with the second limiting groove 122a of the synchronizing member 120, so that, when the first rotating member 210 rotates in the first rotational direction relative to the mounting seat 110, the first driving arm 213 in screw engagement with the first limiting groove 121a can drive the synchronizing member 120 to move along the length direction of the mounting seat 110, that is, by using the first driving arm 213 extending helically, the rotational driving force of the first rotating member 210 can be converted into a linear driving force, and under the action of the linear driving force, the first driving arm 213 can drive the synchronizing member 120 to move along the axial direction of the screw, that is, along the length direction of the mounting seat 110.

Then, since the synchronizing member 120 is further matched with the second driving arm 223 through the second limiting groove 122a thereof, in the process of making the synchronizing member 120 perform linear motion relative to the mounting seat 110, linear acting force is applied to the second driving arm 223, and since the second driving arm 223 has a spiral structure, the synchronizing member 120 can drive the second driving arm 223 to rotate relative to the mounting seat 110, and further drive the whole second rotating member 220 to rotate relative to the mounting seat 110; meanwhile, since the screw direction of the second driving arm 223 is opposite to the screw direction of the first driving arm 213, the synchronizing member 120 can drive the second driving arm 223 to rotate along the second rotation direction opposite to the first rotation direction relative to the mounting seat 110, so that the first rotating member 210 and the second rotating member 220 can synchronously rotate, and the rotation directions of the first rotating member and the second rotating member are opposite.

Specifically, the specific parameters of each of the first driving arm 213 and the second driving arm 223 of the spiral structure may be determined according to practical situations, which is not limited herein. In addition, the first connecting portion 211, the first rotating arm 212 and the first driving arm 213 may be formed separately by using hard materials such as metal, and connected integrally by welding or thermal sintering; alternatively, the first rotating member 210 including the first connecting portion 211, the first rotating arm 212, and the first driving arm 213 may be integrally formed. Similarly, the second rotating member 220 may be formed by referring to the first rotating member 210, and the description thereof will not be repeated. In addition, the first limiting groove 121a and the second limiting groove 122a may be formed on one side surface of the synchronous member 120 by etching or the like, and of course, the synchronous member 120 having the first limiting groove 121a and the second limiting groove 122a may be directly formed by integral molding, and the first limiting groove 121a and the second limiting groove 122a may be linear grooves, and the width, the length, and the like of the first limiting groove 121a and the second limiting groove 122a may be determined according to the specific dimensions of the first driving arm 213 and the second driving arm 223, respectively, which are not limited herein.

The embodiment of the application discloses a hinge mechanism, which comprises a mounting assembly, and a first rotating member 210 and a second rotating member 220 connected to two opposite sides of the mounting assembly. The first rotating arm 212 of the first rotating member 210 is rotatably connected to one side of the mounting base 110, and the second rotating arm 222 of the second rotating member 220 is rotatably connected to the other side of the mounting base 110, so that the first rotating member 210 and the second rotating member 220 can both form a rotating fit relationship with the mounting base 110.

Meanwhile, one surface of the mounting seat 110 in the mounting assembly is provided with a synchronizing piece 120, the synchronizing piece 120 is movably matched with the mounting seat 110 in the length direction of the mounting seat 110, the synchronizing piece 120 is provided with a first limiting groove 121a and a second limiting groove 122a, a first driving arm 213 in the first rotating piece 210 is slidably matched with the first limiting groove 121a, a second driving arm 223 in the second rotating piece 220 is slidably matched with the second limiting groove 122a, the first driving arm 213 and the second driving arm 223 are of spiral structures which spirally extend around the length direction of the mounting seat 110, and the rotation directions of the first driving arm 213 and the second driving arm 223 are opposite, so that under the condition that the first rotating piece 210 rotates along the first rotation direction relative to the mounting seat 110, the first rotating piece 210 can drive the synchronizing piece 120 to move along the length direction of the mounting seat 110 through the first driving arm 213, and the second driving arm 223 is driven to rotate by the synchronizing piece 120, and the second rotating piece 220 is enabled to rotate along the direction opposite to the first rotating piece 210 relative to the mounting seat 110, and the purpose of synchronously rotating the first rotating piece 210 and the second rotating piece 220 relative to the mounting seat 110 is achieved.

In addition, the space occupied by the structure in the hinge mechanism is relatively small, and the whole size of the whole hinge mechanism can be further reduced by mutually matching the components, so that the space occupied by the hinge mechanism in the electronic equipment can be reduced, and the layout work of other components in the electronic equipment is facilitated.

As described above, the mounting base 110 may be provided with an arcuate recess, and the first rotating arm 212 may extend into the arcuate recess such that the first rotating arm 212 and the mounting base 110 are in a rotationally engaged relationship. In another embodiment of the present application, as shown in fig. 2, the mounting base 110 is provided with a first accommodating groove 111, one of two opposite side walls of the first accommodating groove 111 along the length direction of the mounting base 110 is provided with a first arc-shaped matching portion 140, one side of the first rotating arm 212 is provided with a second arc-shaped matching portion 201, the second arc-shaped matching portion 201 is in rotating fit with the first arc-shaped matching portion 140 of the first accommodating groove 111, one of the first arc-shaped matching portion 140 and the second arc-shaped matching portion 201 is an arc-shaped sink groove, and the other is an arc-shaped protrusion, so that the first rotating arm 212 can form a rotating fit relationship with the mounting base 110.

Under the above technical solution, the first rotating arm 212 and the mounting seat 110 can be mutually limited in the length direction of the mounting seat 110 due to the limitation of the first accommodating groove 111 on the mounting seat 110, and the first rotating arm 212 and the second rotating arm 222 can be mutually limited in the direction perpendicular to the length direction of the mounting seat 110 due to the interaction of the first arc-shaped matching portion 140 and the second arc-shaped matching portion 201; and, the first rotating arm 212 and the first receiving groove 111, and the first arc-shaped engaging portion 140 and the second arc-shaped engaging portion 201, which are engaged with each other, can provide a securing function for the rotating engagement relationship between the first rotating arm 212 and the mounting base 110, thereby making the rotating engagement relationship between the first rotating arm 212 and the mounting base 110 more stable and reliable.

In order to improve the overall structural strength of the mounting base 110, the first arc-shaped matching portion 140 disposed on the side wall of the first accommodating groove 111 may be an arc-shaped protrusion, and the second arc-shaped matching portion 201 disposed on the side surface of the first rotating arm 212 may be an arc-shaped sink groove, where the structures and the dimensions of the arc-shaped protrusion and the arc-shaped sink groove correspond to each other, so as to ensure that the two may want to form a rotating matching relationship.

Similarly, the first accommodating groove 111 may be disposed in the mounting seat 110 at a position corresponding to the second rotating arm 222, and the first arc-shaped matching portion 140 is disposed on the sidewall of the first accommodating groove 111, and accordingly, by disposing the second arc-shaped matching portion 201 on the second rotating arm 222, the second rotating arm 222 can also form a stable and reliable rotating matching relationship with the mounting seat 110.

Of course, the first arc-shaped engaging portions 140 may be disposed on two opposite sidewalls of the first accommodating groove 111 to further enhance the stability of the rotation engagement relationship between the first rotating arm 212 (and the second rotating arm 222) and the mounting base 110. In consideration of various factors such as processing cost, processing difficulty and stability, as shown in fig. 2, the first arc-shaped matching portion 140 may be formed on only one side wall of the first accommodating groove 111, and the second arc-shaped matching portion 201 on the first rotating arm 212 and the second arc-shaped matching portion 201 on the second rotating arm 222 may be disposed opposite to each other along the length direction of the mounting seat 110, which may also enable the first rotating arm 212 (and the second rotating arm 222) to form a relatively stable rotating matching relationship with the mounting seat 110.

As described above, the first driving arm 213 of the first rotating member 210 is also engaged with the synchronizing member 120 located on one side of the mount 110, and therefore, in the case where the first rotating arm 212 of the first rotating member 210 is mounted in the first receiving groove 111 of the mount 110, the first driving arm 213 can be located outside the mount 110 by reducing the length of the mount 110, thereby preventing the mount 110 from interfering with the engagement of the first driving arm 213 with the synchronizing member 120 located on the other side of the mount 110. Alternatively, in the case that the length of the mounting seat 110 is relatively long, an additional groove structure may be provided on the mounting seat 110 and penetrate through the mounting seat 110, so that the first driving arm 213 may be engaged with the synchronizing member 120 on the other surface of the mounting seat 110 through the groove structure.

To minimize the difficulty of machining the mounting base 110, the first receiving slot 111 may be disposed through the mounting base 110, which enables a portion of the first driving arm 213 to pass through the first receiving slot 111 and extend into the first limiting slot 121a of the synchronizing member 120, so that the first driving arm 213 can form a reliable mating relationship with the synchronizing member 120. Under the condition of adopting the technical scheme, the same groove structure (namely the first accommodating groove 111) on the mounting seat 110 can be matched with the first driving arm 213 and the first rotating arm 212 at the same time, so that the mounting seat 110 is ensured to have a relatively longer size, the mounting seat 110 can be lightened while the wider mounting capability is ensured, and the overall performance of the mounting seat 110 is improved.

Accordingly, the other first receiving groove 111 of the mounting base 110 for being matched with the second rotating member 220 may also be a penetrating structure, so that the second rotating arm 222 and the second driving arm 223 of the second rotating member 220 may be installed in the other first receiving groove 111 of the mounting base 110 together, and a part of the second driving arm 223 may also pass through the first receiving groove 111 and be matched with the second limiting groove 122a of the synchronous member 120, so that the second rotating member 220 and the synchronous member 120 form a reliable matching relationship.

As described above, the first rotating member 210 includes the first rotating arm 212 and the first driving arm 213, and further, the first rotating member 210 further includes the first hovering arm 214, the first hovering arm 214 is fixed on the first connecting portion 211, and the first hovering arm 214 is located at one side of the first connecting portion 211 where the first rotating arm 212 is located, that is, the first rotating arm 212, the first driving arm 213, and the first hovering arm 214 are all located at the same side of the first connecting portion 211. Specifically, the first hovering arm 214 may be fixed on the first connection portion 211 by means of bonding or the like, and in another embodiment of the present application, the first hovering arm 214 may be formed together with the first connection portion 211 by means of integral molding, so as to improve connection reliability between the two.

The mounting seat 110 is provided with a second accommodating groove 112, one of two opposite side walls of the second accommodating groove 112 along the length direction is provided with a first arc-shaped matching part 140, one side of the first hovering arm 214 is provided with a second arc-shaped matching part 201, and the second arc-shaped matching part 201 on the first hovering arm 214 is used for being in running fit with the first arc-shaped matching part 140 on the second accommodating groove 112, so that the first hovering arm 214 can also form a running fit relationship with the mounting seat 110, and the reliability and stability of the running fit relationship between the first rotating piece 210 and the mounting seat 110 are further improved.

Similarly, one of the first arcuate mating portion 140 disposed within the second receiving slot 112 and the second arcuate mating portion 201 disposed on the first hover arm 214 may be an arcuate projection and the other may be an arcuate sink slot. In view of the above, the detailed description of the specific structures of the first and second arc-shaped fitting parts 140 and 201 has been made, and will not be repeated here. More specifically, the first arc-shaped mating portion 140 disposed in the second accommodating groove 112 may be an arc-shaped protrusion, so as to improve the overall structural stability of the mounting seat 110, and the second arc-shaped mating portion 201 disposed on the first hovering arm 214 may be an arc-shaped sink groove, so as to reduce the processing difficulty.

Further, the first arc-shaped engaging portion 140 may be provided only on one of two side walls of the first accommodation groove 111 opposing in the longitudinal direction, and for this purpose, the first arc-shaped engaging portion 140 provided in the first accommodation groove 111 and the first arc-shaped engaging portion 140 provided in the second accommodation groove 112 may be provided opposite to each other. That is, the two first arc-shaped matching parts 140 may be disposed on the sidewalls of the first accommodating groove 111 and the second accommodating groove 112 adjacent to each other, and may also be disposed on the sidewalls of the first accommodating groove 111 and the second accommodating groove 112 facing away from each other, so that the two sets of first arc-shaped matching parts 140 and the second arc-shaped matching parts 201 matching each other may provide a limiting effect along the length direction for the first connecting member and the mounting seat 110, and prevent the first connecting member and the mounting seat 110 from shaking in the length direction.

More specifically, as shown in FIG. 2, the opening of the arcuate sink provided to first rotating arm 212 may be opposite the opening of the arcuate sink provided to first hovering arm 214. In this case, two first arc-shaped fitting portions 140 are provided on sidewalls of the first receiving groove 111 and the second receiving groove 112, respectively, adjacent to each other. Under the condition of adopting the technical scheme, the distance between the first arc-shaped matching part 140 arranged in the first accommodating groove 111 and the second arc-shaped matching part 201 arranged in the second accommodating groove 112 in the length direction is the largest, so that when the rotation action is provided for the first connecting piece by utilizing the two first arc-shaped matching parts 140, the rotation distance between the first connecting piece and the mounting seat 110 is relatively larger, and the rotation stability between the first connecting piece and the mounting seat 110 can be improved.

Considering that the first rotating member 210 and the second rotating member 220 are symmetrically disposed as a whole, the structural features of the first rotating member 210 in the above embodiment can be correspondingly applied to the second rotating member 220 to improve the stability of the rotation fit relationship between the second rotating member 220 and the mounting base 110.

As described above, the first rotating member 210 includes the first hovering arm 214, the first hovering arm 214 is fixed to a side of the first connecting portion 211 where the first rotating arm 212 is located, and the second rotating member 220 may include the second hovering arm 224, the second hovering arm 224 is fixed to a side of the second rotating portion where the second rotating arm 222 is located, and in order to enable the first hovering arm 214 and the second hovering arm 224 to provide the first rotating member 210 and the second rotating member 220 with capability of hovering with respect to the mounting 110, respectively, the first hovering arm 214 and the second hovering arm 224 are each provided with the damping assembly 300.

In detail, the damping assembly 300 includes the elastic member 310, and the elastic direction of the elastic member 310 includes a component along the length direction of the mount 110, that is, the elastic member 310 is capable of providing an elastic force along the length direction of the mount 110, so that the first and second hover arms 214 and 224 are provided with hover capabilities using the elastic force provided by the elastic member 310.

More specifically, the first hovering arm 214 is provided with a first abutment surface, the second hovering arm 224 is provided with a second abutment surface 224a, a first end of each elastic element 310 abuts against the mounting base 110, a second end of at least one elastic element 310 presses against the first abutment surface, the second end of the elastic element 310 moves along the first abutment surface, a second end of at least one other elastic element presses against the second abutment surface 224a, and the second end of the elastic element 310 moves along the second abutment surface 224 a.

That is, in the embodiment of the present application, by making the elastic member 310 abutted between the mount 110 and the first hovering arm 214 in a compressed state, the elastic member 310 may apply a frictional force perpendicular to the length direction of the mount 110 to the first hovering arm 214, thereby restricting the relative rotation between the first hovering arm 214 and the mount 110, and making the first hovering arm 214 generate a damping effect, so that the first hovering arm 214 has a capability of hovering relative to the mount 110, and a screen support portion connected to the first hovering arm 214 can hover at an arbitrary angle within a rotation range thereof. Similarly, the screen support connected to the second hover arm 224 can also hover at any angle within its rotational orientation.

Specifically, the mounting seat 110, the first hovering arm 214 and the second hovering arm 224 may each be provided with a limiting post, and by enabling the opposite two ends of the elastic member 310 to be respectively sleeved outside the limiting posts, the assembly relationship between the elastic member 310 and the mounting seat 110 is ensured to be relatively stable. As described above, the first arc-shaped engagement portion 140 may be provided on one of two opposite side walls in the length direction in the second receiving groove 112 of the mounting seat 110, and for this purpose, the first end of the elastic member 310 may be abutted against the other of the two side walls, and the second end of the elastic member 310 may be enabled to be abutted against the surface of the first hovering arm 214 (or the second hovering arm 224) mounted in the second receiving groove 112.

Of course, the first end of the elastic member 310 may be abutted against other positions on the mounting base 110, for example, an avoidance area may be provided for the elastic member 310 on a side of the mounting base 110 away from the second arc-shaped matching portion 201 in the first hovering arm 214, so as to increase the installation space of the elastic member 310 in the length direction, on the one hand, the stability of expansion and contraction of the elastic member 310 may be improved, and on the other hand, the movable range of the first hovering arm 214 (i.e. the first rotating member 210) and the mounting base 110 in the length direction may be reduced, and the connection reliability between the first rotating member 210 and the mounting base 110 may be improved. Similarly, for the second hovering arm 224 mated with the second accommodating groove 112 on the other side of the mounting base 110, an avoidance area may be provided on a side of the first mounting base 110 away from the second arc-shaped mating portion 201 in the second hovering arm 224 for the elastic member 310 mated with the second hovering arm 224, and the corresponding elastic member 310 is installed in the avoidance area, so as to improve the expansion stability of the elastic member 310 and the mating stability between the second connecting member and the mounting base 110.

Further, the first abutment surface includes a first plane 214a, a second plane 214b and a third plane 214c, and the three planes are sequentially connected; that is, first plane 214a, second plane 214b, and third plane 214c are sequentially distributed along the extending direction of first hover arm 214. More specifically, first planar surface 214a is located at a proximal end of first hover arm 214 with respect to first coupling portion 211, and third planar surface 214c is located at a distal end of first hover arm 214 with respect to first coupling portion 211.

Also, the distance between the first plane 214a and the third plane 214c and the first end of the elastic member 310 is greater than the distance between the second plane 214b and the first end of the elastic member 310 along the length direction, that is, the compression potential of the elastic member 310 is maximized when the second end of the elastic member 310 is matched with the first plane 214a (or the third plane 214 c), that is, when the elastic member 310 is matched with the second plane 214b, compared with the state that the second end of the elastic member 310 is matched with the second plane 214 b. Of course, the difference between the distance between the first plane 214a and the first end of the elastic member 310 and the distance between the second plane 214b and the first end of the elastic member 310 may be selected according to practical situations, and the distance between the first plane 214a and the first end of the elastic member 310 may be equal to or greater than the dimension of the elastic member 310 in the length direction when in the natural state, so that the elastic member 310 may be abutted between the first plane 214a and the mounting seat 110. In addition, the third plane 214c and the first plane 214a may be flush in the length direction, so as to reduce the processing difficulty of the first contact surface.

In addition, the first plane 214a and the third plane 214c each smoothly transition with the second plane 214b, so that the elastic member 310 can smoothly switch between any adjacent two of the first plane 214a, the second plane 214b and the third plane 214c when being matched with the first abutting surface. Specifically, an arcuate transition surface may be provided between the first plane 214a and the second plane 214b, and an arcuate transition surface may be provided between the second plane 214b and the third plane 214c, which may ensure that the elastic member 310 can smoothly move relative to the first abutment surface.

When the hinge mechanism is in the unfolded state, the second end of the elastic member 310 is pressed against the first plane 214a, and when the hinge mechanism is in the folded state, the second end of the elastic member 310 is pressed against the third plane 214c. That is, during the process of switching the hinge mechanism from the unfolded state to the folded state, the second end of the elastic member 310 is in contact with the first plane 214a, the second plane 214b and the third plane 214c, respectively, whereas during the process of switching the hinge mechanism from the folded state to the unfolded state, the second end of the elastic member 310 is in contact with the third plane 214c, the second plane 214b and the first plane 214a, respectively.

In the case of adopting the above technical solution, since the compression degree of the elastic member 310 is the greatest when the elastic member 310 abuts against the second plane 214b, when the hinge mechanism is gradually unfolded from the folded state, the elastic member 310 can release a certain elastic force in the process of switching the state of abutting against the second plane 214b to the state of abutting against the first plane 214a by using the smooth transition surface between the first plane 214a and the second plane 214b, so that the elastic member 310 is automatically switched from the second plane 214b to the first plane 214a, thereby enabling the hinge mechanism to be easily unfolded in place and improving the user experience. Similarly, with the smooth transition surface between the second plane 214b and the third plane 214c, when the hinge mechanism is gradually folded from the unfolded state, the elastic member 310 can release a certain elastic force in the process of switching from the state of abutting against the second plane 214b to the state of abutting against the third plane 214c, so that the elastic member 310 is automatically switched from the second plane 214b to the third plane 214c, and the hinge mechanism is easier to fold in place.

In addition, in the case of adopting the above technical solution, when the hinge mechanism is in a hovering state, the second ends of the elastic members 310 are substantially abutted against the second plane 214b, and the distance between the second plane 214b and the first end of the elastic member 310 is relatively smaller, so that stability and reliability of the hinge mechanism in hovering action can be improved, damping sense can be improved, and user experience can be improved.

Of course, in order to promote smoothness of the relative movement between the first hovering arm 214 and the corresponding elastic member 310, optionally, in the hinge mechanism disclosed in the embodiment of the present application, the damping assembly 300 may further include a cam 320, where the cam 320 is disposed at the second end of the elastic member 310, and the cam 320 is in point contact or line contact with the first abutment surface. That is, in the embodiment of the present application, the elastic member 310 corresponding to the first hovering arm 214 is movably connected with the first hovering arm 214 through the cam 320, and by making the point contact or the line contact between the cam 320 and the first hovering arm 214, the contact area between the cam 320 and the first hovering arm 214 is reduced, and the smoothness of the motion between the two is improved.

Specifically, the cam 320 and the elastic member 310 may be connected to each other in a nested manner, or the second end of the elastic member 310 may be fixed to an end surface of the cam 320 facing away from the first hovering arm 214 by using an adhesive or the like. The end of the cam 320 facing the first hover arm 214 is provided with a spherical surface to form a point contact mating relationship with the first hover arm 214, or the end of the cam 320 facing the first hover arm 214 is provided with a cylindrical side-like structure to bring the cam 320 into a line contact mating relationship with the first hover arm 214.

As described above, the elastic direction of the elastic member 310 has a component along the length direction of the mount 110, alternatively, the elastic direction of the elastic member 310 is parallel to the length direction of the mount 110, on the one hand, facilitating the installation of the elastic member 310, and on the other hand, also maximizing the effectiveness of the elastic force of the elastic member 310.

Based on the above embodiment, the cam 320 may be provided with the guide post 330, and the mounting assembly is provided with the guide groove, and the guide groove extends along the length direction of the mounting seat 110, so that the guide post 330 and the guide groove can be slidingly matched in the length direction of the mounting seat 110, and the guide post 330 is utilized to provide guiding and limiting effects for the movement of the cam 320 along with the expansion and contraction of the elastic member 310 relative to the mounting seat 110, so as to improve the stability of the relative movement process between the cam 320 and the mounting seat 110.

Specifically, the cam 320 and the guide post 330 may be formed in an integrally formed manner, so as to improve connection reliability between the cam and the guide post, and the guide post 330 may be a cylindrical structural member, so as to improve smoothness of matching between the guide post and the guide slot, and prevent jamming between the guide post and the guide slot.

As described above, the mounting assembly includes the mount 110 and the synchronizing member 120, and the synchronizing member 120 may be formed in a stable mating relationship with the mount 110 in a direction perpendicular to the mount 110 by a sliding connection or the like. In another embodiment of the present application, the mounting assembly may further include a base 130, the base 130 being disposed on a side of the mounting base 110 facing the synchronizing member 120, that is, the synchronizing member 120 may be sandwiched between the mounting base 110 and the base 130; and, the base 130 and the mounting seat 110 can form a detachable fixed connection relationship by using a connecting piece such as a screw, so that a limit effect along a direction perpendicular to the mounting seat 110 can be provided for the synchronous piece 120 by using the base 130 and the mounting seat 110, and a stable assembly relationship between the synchronous piece 120 and the mounting seat 110 is ensured. The above-described direction perpendicular to the mount 110 may also be referred to as the thickness direction of the mount 110.

In addition, in the above-described embodiment, the elastic direction of the elastic member 310 may be made parallel to the longitudinal direction of the mount 110, based on which, in the direction perpendicular to the longitudinal direction and the thickness direction of the mount 110, the elastic member 310 engaged with the first hovering arm 214 and the elastic member 310 engaged with the second hovering arm 224 may be made to be disposed at intervals, in which case the movable ranges of the first hovering arm 214 and the second hovering arm 224 engaged with the two elastic members 310 respectively in the direction perpendicular to the longitudinal direction and the thickness direction of the mount 110 are also made relatively large, so that the situation in which mutual interference exists between the first hovering arm 214 and the second rotating portion, and between the second hovering arm 224 and the first rotating portion, may be prevented, and the sizes of the first hovering arm 214 and the second hovering arm 224 may be made redundant, and the reliability when the first hovering arm 214 and the second hovering arm 224 are engaged with the cam 320 may be improved.

As described above, the display screen may be supported on the screen supporting portion and the hinge mechanism, and a certain supporting effect may be provided for the display screen by using the mounting base 110, so that the supported effect of the display screen is relatively better, optionally, the hinge mechanism disclosed in the embodiment of the present application may further include a first supporting portion 410 and a second supporting portion 420, where the first supporting portion 410 and the second supporting portion 420 are both used for supporting the display screen of the electronic device. Specifically, the first supporting portion 410 and the second supporting portion 420 may be plate-shaped structures, or both include supporting members with plate-shaped structures, so as to provide a relatively stable and uniform supporting effect for the display screen by using the supporting members with plate-shaped structures, ensure relatively good display effect of the display screen, and make the service life of the display screen relatively longer.

Meanwhile, the first supporting part 410 is fixed on the first rotating member 210, the second supporting part 420 is fixed on the second rotating member 220, and then the first supporting part 410 and the second supporting part 420 can also rotate relatively along with the relative rotation of the first rotating member 210 and the second rotating member 220, so that in the process of folding the display screen, the first supporting part 410 and the second supporting part 420 are ensured to provide avoidance space for the display screen in a relative rotation mode, and the display screen is ensured not to be extruded due to folding. In addition, in order to improve the stability of the operation of the first support portion 410 and the second support portion 420, the first support portion 410 and the second support portion 420 may be in a rotation fit relationship with the mounting seat 110.

As described above, the display screen may be provided with a supporting effect by providing the first and second supporting parts 410 and 420 in the hinge mechanism, and in the above-described embodiment, the first supporting part 410 and the first rotating member 210 may be fixed to each other and the second supporting part 420 and the second rotating member 220 may be fixed to each other.

In another embodiment of the present application, the mounting base 110 and the first rotating member 210 may be rotatably connected to the first supporting portion 410, and the mounting base 110 and the second rotating member 220 may be rotatably connected to the second supporting portion 420, so that the first supporting portion 410 may have the capability of rotating relative to the first rotating member 210, and the second supporting portion 420 may have the capability of rotating relative to the second rotating portion. In this way, when the hinge mechanism is in the folded state, the first support portion 410 and the second support portion 420 may have a flared structure, and the flares formed by the two may be directed in the direction in which the mount 110 is located.

Specifically, by providing corresponding rotation structures on the first and second support parts 410 and 420 and making the rotation structures have a preset rotation track, when the first and second support parts 210 and 220 are rotated with respect to the mounting base 110, in a state that the first support part 410 is mounted to the mounting base 110 and the first and second rotation parts 210 and 220, the first and second support parts 410 and 420 can be rotated therewith and finally rotated to be in a flared state. Under the condition of adopting the technical scheme, the first supporting part 410 and the second supporting part 420 can provide larger avoiding space for the display screen, are suitable for the shape of the bent part of the display screen, and further prevent the display screen from being extruded in the folding process.

As described above, the synchronizing member 120 is provided with the first and second limiting grooves 121a and 122a to provide driving actions to the first and second driving arms 213 and 223, respectively, so that the first and second rotating members 210 and 220 are brought into a synchronized action relationship. Specifically, the synchronizing member 120 includes a first limiting portion 121 and a second limiting portion 122, the first limiting portion 121 and the second limiting portion 122 are fixedly connected, the first limiting groove 121a may be disposed on the first limiting portion 121, and the second limiting groove 122a may be disposed on the second limiting portion 122. More specifically, the first limiting portion 121 and the second limiting portion 122 may be formed in an integrally formed manner, so as to improve the overall structural stability of the synchronizing member 120, and further provide a reliable synchronization effect for the first rotating member 210 and the second rotating member 220.

In the process of forming the first limiting groove 121a and the second limiting groove 122a, the first limiting groove 121a and the second limiting groove 122a may be spaced along the length direction of the mounting seat 110, so as to ensure that the first driving arm 213 and the second driving arm 223 will not interfere with each other in the process of relative movement. In addition, at least a part of the first limiting portion 121 and the second limiting portion 122 are stacked, that is, the projection portions of the first limiting portion 121 and the second limiting portion 122 in the length direction overlap, so that the space occupied by the first limiting portion 121 and the second limiting portion 122 in the length direction of the mounting seat 110 can be relatively small, the size of the synchronizing piece 120 in the length direction is reduced, and the size of the whole hinge mechanism is relatively small.

Based on the hinge mechanism disclosed in the above embodiment, the embodiment of the application also discloses an electronic device, which comprises a display screen, a plurality of screen supporting parts, and the hinge mechanism disclosed in any one of the above embodiments. Alternatively, the number of screen supporting parts may be two, and the two screen supporting parts may be a first screen supporting part and a second screen supporting part, respectively. In the process of assembling the electronic device, the first screen supporting part and the first connecting part 211 can be fixedly connected by using connecting pieces such as bonding pieces or screws, and the second screen supporting part and the second connecting part 221 can be fixedly connected, so that the first screen supporting part and the second screen supporting part can form a rotating fit relationship through a hinge mechanism; simultaneously, the display screen is supported on the first screen supporting part and the second screen supporting part, so that the first screen supporting part and the second screen supporting part can drive the display screen to be switched between a folding state and an unfolding state under the action of the hinge mechanism.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.

Claims (11)

1. A hinge mechanism is characterized by comprising a mounting assembly, a first rotating member and a second rotating member, wherein,

The first rotating piece and the second rotating piece are respectively arranged on two opposite sides of the mounting assembly, the mounting assembly comprises a mounting seat and a synchronizing piece arranged on one surface of the mounting seat, and the synchronizing piece and the mounting seat are movably matched in the length direction of the mounting seat;

the synchronous piece is provided with a first limit groove and a second limit groove, the first rotating piece comprises a first connecting part, a first rotating arm and a first driving arm, the first rotating arm and the first driving arm are connected to the same side of the first connecting part, and the second rotating piece comprises a second connecting part, a second rotating arm and a second driving arm, the second rotating arm and the second driving arm are connected to the same side of the second connecting part;

The first rotating arm and the second rotating arm are in rotating fit with the mounting seat along the direction around the length direction, the first driving arm and the second driving arm extend spirally around the length direction and have opposite rotating directions, the first driving arm is in sliding fit with the first limiting groove, the second driving arm is in sliding fit with the second limiting groove, when the first rotating member rotates along the first rotating direction relative to the mounting seat, the first driving arm drives the synchronizing member to move along the length direction relative to the mounting seat, the synchronizing member drives the second driving arm to rotate along the second rotating direction relative to the mounting seat, and the second rotating direction is opposite to the first rotating direction;

The first rotating piece further comprises a first hovering arm, the first hovering arm is fixed on one side of the first connecting portion where the first rotating arm is located, the mounting seat is provided with a second accommodating groove, one of two opposite side walls of the second accommodating groove along the length direction is provided with a first arc-shaped matching portion, one side of the first hovering arm is provided with a second arc-shaped matching portion in rotating fit with the first arc-shaped matching portion of the second accommodating groove, one of the first arc-shaped matching portion and the second arc-shaped matching portion is an arc-shaped protrusion, and the other one of the first arc-shaped matching portion and the second arc-shaped matching portion is an arc-shaped sinking groove;

The hinge mechanism further comprises a damping assembly, the damping assembly comprises elastic pieces, the elastic direction of the elastic pieces comprises a component along the length direction, the first hovering arms are provided with first abutting faces, the first ends of the elastic pieces are abutted against the mounting seats, the second ends of at least one of the elastic pieces are extruded on the first abutting faces and move along the first abutting faces, and the second arc-shaped matching parts and the first abutting faces are arranged on two sides of the first hovering arms opposite to each other;

the mounting seat is further provided with a first accommodating groove, one of the two opposite side walls of the first accommodating groove along the length direction is provided with a first arc-shaped matching part, one side of the second rotating arm is provided with a second arc-shaped matching part which is in rotating fit with the first arc-shaped matching part of the first accommodating groove, one of the first arc-shaped matching part and the second arc-shaped matching part is an arc-shaped sinking groove, the other one of the first arc-shaped matching part and the second arc-shaped matching part is an arc-shaped protrusion, and the first accommodating groove and the second accommodating groove are communicated.

2. The hinge mechanism of claim 1, wherein the first receiving slot is disposed through the mounting base and a portion of the first drive arm extends through the first receiving slot and into the first limiting slot.

3. The hinge mechanism of claim 1, wherein an opening of the arcuate sink slot provided on the first rotating arm is opposite an opening of the arcuate sink slot provided on the first hovering arm.

4. The hinge mechanism of claim 1, wherein the second rotating member further comprises a second hover arm fixed to a side of the second connecting portion where the second rotating arm is located, the first hover arm and the second hover arm each being provided with the damping assembly;

the second hovering arm is provided with a second abutting surface, and the second ends of at least one other elastic piece are extruded on the second abutting surface and move along the second abutting surface.

5. The hinge mechanism of claim 1, wherein the first abutment surface comprises a first plane, a second plane, and a third plane connected in sequence; along the length direction, the distance between each of the first plane and the third plane and the first end of the elastic piece is larger than the distance between each of the second plane and the first end of the elastic piece, and the first plane and the third plane are in smooth transition with each of the second plane;

The second end of the elastic member is pressed against the first plane when the hinge mechanism is in the unfolded state, and the second end of the elastic member is pressed against the third plane when the hinge mechanism is in the folded state.

6. The hinge mechanism of claim 1, wherein the damping assembly further comprises a cam disposed at the second end of the resilient member, the cam in point or line contact with the first abutment surface.

7. The hinge mechanism according to claim 6, wherein the elastic member has an elastic direction parallel to the longitudinal direction, the cam is provided with a guide post, the mount is provided with a guide groove extending along the longitudinal direction, and the guide post is slidably fitted with the guide groove in the longitudinal direction.

8. The hinge mechanism of claim 1, further comprising a first support portion and a second support portion, wherein the first support portion and the second support portion are each configured to support a display screen of an electronic device, the first support portion is fixed to the first rotating member, the second support portion is fixed to the second rotating member, and the first support portion and the second support portion rotate relative to each other as the first rotating member and the second rotating member rotate relative to each other.

9. The hinge mechanism according to claim 1, further comprising a first supporting portion and a second supporting portion, wherein the first supporting portion and the second supporting portion are each configured to support a display screen of an electronic device, the mount and the first rotating member are each rotatably connected to the first supporting portion, the mount and the second rotating member are each rotatably connected to the second supporting portion, and the first supporting portion and the second supporting portion are configured to have a flared structure with a flared direction toward a direction in which the mount is located when the hinge mechanism is in a folded state.

10. The hinge mechanism of claim 1, wherein the synchronizing member comprises a first limit portion and a second limit portion fixedly connected, the first limit slot being located in the first limit portion, the second limit slot being located in the second limit portion; in the length direction, the first limit groove and the second limit groove are arranged at intervals, and at least a part of the first limit part and the second limit part are arranged in a lamination mode.

11. An electronic device comprising a first screen support, a second screen support, a display screen, and the hinge mechanism of any one of claims 1-10, wherein the first screen support is fixedly connected to the first connection, the second screen support is fixedly connected to the second connection, and the display screen is supported by the first screen support and the second screen support.